I have tried the safe mode option and it does not progress from the safe mode screen. There is nothing on the screen for me to even try to run a scan.I have tried the safe mode option and it does not progress from the safe mode screen. There is nothing on the screen for me to even try to run a scan.

If that one wont work I think we may need to try repairing your operating system and use your Operating System installation disk..
You can check this link for that: http://www.webtree.ca/windowsxp/repair_xp.htm#How to access Last Known Good Configuration:

Please restart in the safe mode once.And run a virus scan after that turn off your laptop and turn it on again now don't go into the safe mode just start the windows normally,enter your password and see if you face the same problem.

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

if you have a program running that is non responsive and try to shut down or restart, the computer will get stuck on the logging off screen.
Often times if a computer takes a long time to do anything, it means you need to defrag your hard drive. Manually shut down the computer (you might have been pushing the Sleep button. If you can't figure it out, just unplug it and let the battery run down.) and when you restart it, go to the My Computer or Computer option, right click on your C drive, click on properties and a window should pop up. Click on the tab that says Tools and click on the Defragmentation option. The rest should be pretty self-explanatory.If nothing works.
please try logging in as administrator in safe mode and doing a system restore.... please see Using Windows Vista System Restore :: the How-To Geek

HI
Try to unplug the power supply and take the battery out. so it means there is no power going to the laptop. now press and hold the power button down for approximately 1 minute.
After that put the battery in and plug the adapter back.
Try to turn the laptop on most probably it will come on
If it still does the same thing contact ur laptop manufacturer

This problem is likely caused by overheating. The CPU reaches a temp to high and shuts the system down. When you try to turn it on the system is still to hot and it will not let the computer power on. You can try blowing out the fans and heat sink with an air compressor or can of compressed air. If this does not help the problem you may need to have thermal compound reapplied. If that does not fix it it will need a new heatsink/fan/

Start up in safe mode pressing F8 on boot up and select safe mode.
When in the system under administrator there will be option for you to delete the password on your account.
Re boot then enter again with no password.